86216478944171 has 2 divisors, whose sum is σ = 86216478944172. Its totient is φ = 86216478944170.

The previous prime is 86216478944159. The next prime is 86216478944179. The reversal of 86216478944171 is 17144987461268.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86216478944171 is a prime.

It is not a weakly prime, because it can be changed into another prime (86216478944179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43108239472085 + 43108239472086.

It is an arithmetic number, because the mean of its divisors is an integer number (43108239472086).

Almost surely, 2^{86216478944171} is an apocalyptic number.

86216478944171 is a deficient number, since it is larger than the sum of its proper divisors (1).

86216478944171 is an equidigital number, since it uses as much as digits as its factorization.

86216478944171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130056192, while the sum is 68.

The spelling of 86216478944171 in words is "eighty-six trillion, two hundred sixteen billion, four hundred seventy-eight million, nine hundred forty-four thousand, one hundred seventy-one".